IVF timing tweaked: could waiting 1-2 days boost baby chances?

NCT ID NCT04163133

Recruiting now Knowledge-focused Sponsor: Peking University Third Hospital Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study compares the usual timing of the 'trigger' shot in IVF with a 1-2 day delay. Researchers want to see if waiting longer leads to more high-quality embryos and higher live birth rates. About 834 women undergoing their first or second IVF cycle will take part.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

What this could lead to: If delaying the trigger improves outcomes, it could help couples undergoing IVF get more high-quality embryos and higher live birth rates.
What could go wrong: This is an early-stage study comparing two timing strategies, not a new drug or treatment. The benefit of a delay is unproven, and individual results may vary.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

infertility disorder

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

IVF OUTCOME

Contacts and locations

Locations

Peking Univesity Third Hospital
RECRUITING

Beijing, Beijing Municipality, 100191, China

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